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Define electrical resistivity and list the factors on which it depends. |
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Answer» Electrical resistivity (also known as resistivity, SPECIFIC electrical resistance, or VOLUME resistivity) is a fundamental property that quantifies how strongly a given material opposes the flow of electric current. A low resistivity indicates a material that readily allows the flow of electric current. Resistivity is commonly represented by the Greek letter ρ (rho). The SI UNIT of electrical resistivity is the ohm-metre (Ω⋅m).[1][2][3] As an example, if a 1 m × 1 m × 1 m solid cube of material has sheet CONTACTS on two OPPOSITE faces, and the resistance between these contacts is 1 Ω, then the resistivity of the material is 1 Ω⋅m. |
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